摘要
为了研究大开地铁车站在非一致波动输入下的动力响应规律,采用黏弹性人工边界单元模拟远场地基无限域,基于ABAQUS有限元软件平台建立二维地铁车站结构-地基动力相互作用数值模型.采用自由波场一维化时域求解方法,利用Matlab编程将脉冲波按SV波形分别以0°、15°和30°转化为非一致等效节点荷载,并导入到ABAQUS软件中,开展大开车站动力时程分析.计算分析表明:随着入射角的增大,地铁车站中柱柱脚和右侧顶板中部截面的轴力、剪力和弯矩幅值变小,且当入射角为30°时,各内力幅值衰减幅度最大;随着入射角的增大,车站中柱柱顶与柱脚之间的相对位移和车站顶板中部的水平位移响应变小,且位移幅值随之衰减.
In order to study the dynamic response rules of Daikai subway station under non-uniform wave input,viscoelastic artificial boundary elements were used to simulate the infinite field of far-field foundation.Based onABAQUS finite element sofware platfom,a two-dimensional numerical model was established for subway sta-tion structure-foundation dynamic interaction problems.A one-dimensional time-domain solution method forfree wave field was adopted,so the pulse wave could be converted into non-uniform equivalent node load ac-cording to SV wave in 0°,15°and 30°respectively by Matlab programming,which was imported into ABAQUSsoftware to carry out dynamic time history analysis.The results of calculation and analysis show that by increasingincidence angle,the amplitudes of axial force,shear force and bending moment of the central column base and the middle section of the right roof-slab become smaller,and when the incidence angle is equal to 30°,the attenua-tion amplitude of each intemal force amplitude is maximum.In addition,with the increase of the incidence angle,the relative displacement between top and foot of central column in the station and the horizontal displacement re-sponse in the middle of the roof slab also decrease,and the displacement amplitudes decrease accordingly.
作者
余船强
高智能
谷音
YU Chuanqiang;GAO Zhineng;GU Yin(School of Civil and Surveying&Mapping Engineering,Jiangxi University of Science and Technology,GanzhouJiangxi 341000,China;Key Laboratory for Geo-environmental Engineering and Engineering Disaster Governanceof Jiangxi Province,Jjiangxi University of Science and Technology,Ganzhou,Jiangxi 341000,China;College of Civil Engineering,Fuzhou University,Fuzhou 350108,China;Key Laboratory for Multi Disaster Prevention andGovemance of Civil Engineering of Fujian Province,Fuzhou Univeristy,Fuzhou 350108,China)
出处
《昆明理工大学学报（自然科学版）》
北大核心
2023年第4期144-152,共9页
Journal of Kunming University of Science and Technology(Natural Science)
基金
国家自然科学基金项目(52068032)
江西省教育厅科学技术研究项目(GJJ190498)。
关键词
结构-地基相互作用
大开地铁车站
非一致波动输入
位移时程
内力时程
structure-foundation interaction
Daikai subway station
non-uniform wave input
displacementtime history
intemal force time history
作者简介
余船强(1997-),男,硕士研究生.主要研究方向:结构抗震.E-mail:1289082208@qq.com;通信作者:高智能(1984-),男,博士,讲师.主要研究方向:结构抗震.E-mail:gzhineng@jxust.edu.cn。
